...What? I honestly don't get this statement. Yeah, I can understand finishing the main plot and ending a character arc...but let's be honest, despite the implications they never really gave Desmond much of a character arc to start with. He had little to no material to work with until the little minigames in Revelations, which delved into his backstory far more than recent events and even that is a secondary plot-point at best, with the bulk of the game focusing on Ezio's character arc, as had the two games before it, much like how the first installment overwhelmingly focused on Altair. For pete's sake, if you're going to 'end' a character, at least give that character some screentime to work with before you do it.